Java Course Learning Note-junit accuracy/failure/stress test difference

Accuracy test (result accuracy testing)

For example, Assert.assertequals (expected, actual).

If the result does not meet the expectations, it produces failure. Indicates a problem with the program logic.

Failure test (throwing exception tests)

The expected property is used to indicate the type of exception expected to be thrown. For example, @Test (expected = illegalargumentexception.class).

If the result does not meet the expectations, it produces failure. Indicates a problem with the program logic.

Stress test (run-time testing)

The Timeout property is used to indicate the time limit, in milliseconds. For example, @Test (timeout = 300).

Error occurs if the timeout occurs. The performance of the program itself is not up to the requirements.

　　

As an example,

　　

1  Packageedu.zju.cst.Student;2 3  Public classStudent {4     PrivateString name;5 6      PublicString GetName () {7         returnname;8     }9 Ten      Public voidsetName (String name) { One          This. Name =name; A     } -      -      Publicstring Speak (String stm) { the         Try { -Thread.Sleep (400); -}Catch(interruptedexception e) { - e.printstacktrace (); +         } -          +         returnName + ":" +stm; A     } at}

Student.java

1  PackageEDU.ZJU.CST;2 3 ImportOrg.junit.After;4 ImportOrg.junit.Before;5 Importorg.junit.Test;6 7 Importedu.zju.cst.Student.Student;8 ImportJunit.framework.Assert;9 Ten  Public classStudentaccuracytest { One     PrivateStudent Student; A      - @Before -      Public voidsetUp () { theStudent =NewStudent (); -Student.setname ("Tom"); -     } -      + @Test -      Public voidTestspeak () { +String expected = "Tom:hello"; AString actual = Student.speak ("Hell"); at Assert.assertequals (expected, actual); -     } -      - @After -      Public voidTearDown () { -          in     } -}

Studentaccuracytest.java

1  PackageEDU.ZJU.CST;2 3 ImportOrg.junit.After;4 ImportOrg.junit.Before;5 Importorg.junit.Test;6 7 Importedu.zju.cst.Student.Student;8 9  Public classStudentfailuretest {Ten     PrivateStudent Student; One      A @Before -      Public voidsetUp () { -Student =NewStudent (); theStudent.setname ("Tom"); -     } -      -@Test (expected = illegalargumentexception.class) +      Public voidTestspeak ()throwsIllegalArgumentException { -Student.speak ("Hell"); +     } A      at @After -      Public voidTearDown () { -          -     } -}

Studentfailuretest.java

1  PackageEDU.ZJU.CST;2 3 ImportOrg.junit.After;4 ImportOrg.junit.Before;5 Importorg.junit.Test;6 7 Importedu.zju.cst.Student.Student;8 9  Public classStudentstresstest {Ten     PrivateStudent Student; One      A @Before -      Public voidsetUp () { -Student =NewStudent (); theStudent.setname ("Tom"); -     } -      -@Test (Timeout = 300) +      Public voidTestspeak () { -Student.speak ("Hell"); +     } A      at @After -      Public voidTearDown () { -          -     } -}

Studentstresstest.java

1  PackageEDU.ZJU.CST;2 3 ImportOrg.junit.runner.RunWith;4 ImportOrg.junit.runners.Suite;5 Importorg.junit.runners.Suite.SuiteClasses;6 7@RunWith (Suite.class)8@SuiteClasses ({studentaccuracytest.class, Studentfailuretest.class,9Studentstresstest.class})Ten  Public classTestSuite { One      A}

Testsuite.java

　　

Resources

Summary of several rules of JUnit unit testing

Junit4:test Two properties for annotations: expected and timeout

Java Course Learning Note-junit accuracy/failure/stress test difference